“Lex Luthor, Imp!”
Lex Luthor creates a device that allows him to duplicate Master Mxyzptlk's magic.
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Superboy #131 (1949) is issue #131 of DC's Superboy (1949–1977), with a cover date of July 1966. Written by Otto Binder and E. Nelson Bridwell and drawn by George Papp.
Credits, characters and story details from the Grand Comics Database, CC BY-SA 4.0.